Re: [xml-dev] Transforming documents with undefined entities

[Andrew Campbell <Andrew.Campbell@synchronoss.com>]

Thanks - adding `standalone="yes"` made it throw an error as expected, as did adding `-dtd:yes` to the saxon command.




On 19/04/2016, 13:41, "G. Ken Holman" <g.ken.holman@gmail.com on behalf of gkholman@CraneSoftwrights.com> wrote:

>The answer is in the XML Spec section 4.1:
>
>  https://www.w3.org/TR/2008/REC-xml-20081126/#sec-references
>  Well-formedness constraint: Entity Declared
>  ...
>  Note that non-validating processors are not obligated to read
>  and process entity declarations occurring in parameter entities
>  or in the external subset; for such documents
>
>I note in your example that you don't have a 
>standalone declaration, and so the processor is 
>allowed to ignore the entity reference:
>
><!DOCTYPE chapter SYSTEM "external.dtd">
><chapter>&badent;</chapter>
>
>Changing your instance as follows:
>
><?xml version="1.0" standalone="yes"?>
><!DOCTYPE chapter SYSTEM "external.dtd">
><chapter>&badent;</chapter>
>
>... triggers an error.
>
>I hope this helps.
>
>. . . . . . Ken
>
>At 2016-04-19 08:27 +0000, Andrew Campbell wrote:
>>Hi everyone,
>>
>>I’m experiencing something unexpected when 
>>transforming documents with undefined entities 
>>using Saxon. I asked on the Saxon mailing list, 
>>and Michael Kay suggested I tried asking here too.
>>
>>I have two XML files, one with an internal DTD 
>>(badent-internal.xml), one with an external DTD 
>>(badent-external.xml). Both of them reference an 
>>undefined entity (&badent;). When I parse either 
>>of them with xmllint, the undefined entity is reported.
>>
>>$ xmllint badent-internal.xml
>>badent-internal.xml:4: parser error : Entity 'badent' not defined
>><chapter>&badent;</chapter>
>>                  ^
>>
>>When I try to transform them on the command line 
>>using Saxon, badent-internal.xml throws an 
>>error, but badent-external.xml is transformed as 
>>if the entity reference were not present.
>>
>>$ java -cp 
>>~/Documents/XML/SaxonHE9-6-0-7J/saxon9he.jar 
>>net.sf.saxon.Transform -xsl:simple.xsl -s:badent-internal.xml
>>Error on line 4 column 18 of badent-internal.xml:
>>   SXXP0003: Error reported by XML parser: The 
>> entity "badent" was referenced, but not declared.
>>org.xml.sax.SAXParseException; systemId: 
>>file:/Users/acam0006/Desktop/saxon.entity.test/missing.entity/badent-internal.xml; 
>>lineNumber: 4; columnNumber: 18; The entity 
>>"badent" was referenced, but not declared.
>>
>>$ java -cp 
>>~/Documents/XML/SaxonHE9-6-0-7J/saxon9he.jar 
>>net.sf.saxon.Transform -xsl:simple.xsl -s:badent-external.xml
>><?xml version="1.0" encoding="UTF-8"?><success/>
>>
>>I expected both files to throw the same error. What is going on?
>>
>>I have attached the relevant files to this email.
>>
>>Andrew
>
>
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